参考文档

https://www.elastic.co/guide/en/elasticsearch/reference/6.3/index.html https://www.elastic.co/guide/cn/elasticsearch/guide/current/important-configuration-changes.html https://www.elastic.co/guide/en/elasticsearch/reference/master/setting-system-settings.html

一、环境

1、系统环境

cat /etc/security/limits.conf  elasticsearch soft memlock unlimited elasticsearch hard memlock unlimited elasticsearch soft nofile 131072 elasticsearch hard nofile 131072 elasticsearch soft nproc 4096 elasticsearch hard nproc 4096

2、JAVA环境

java -version openjdk version “1.8.0_161” OpenJDK Runtime Environment (build 1.8.0_161-b14) OpenJDK 64-Bit Server VM (build 25.161-b14, mixed mode)

二、安装配置

1、安装 rpm -qa |grep elas elasticsearch-6.3.2-1.noarch

注意事项 a.注意Centos7.4服务里面需要配置内存锁定，需要修改文件/etc/systemd/system/elasticsearch.service.d/override.conf 参考https://www.elastic.co/guide/en/elasticsearch/reference/master/setting-system-settings.html [root@elasticsearch01 ~]# EDITOR=vim systemctl edit elasticsearch [Service] LimitMEMLOCK=infinity [root@elasticsearch01 ~]# systemctl daemon-reload

b.JAVA路径等要和系统环境保持一致 [root@elasticsearch01 ~]# cat /etc/sysconfig/elasticsearch |grep -Ev “^#|^$” JAVA_HOME=/usr/local/jdk ES_PATH_CONF=/etc/elasticsearch ES_STARTUP_SLEEP_TIME=5

2、配置

注意配置使用默认的就行，大部分参数都是按照默认即可，官方已经调优过了，特别是Centos7里面，不需要在配置文件里面添加，只有那些必须要根据实际情况修改的配置需要填写。

1）、master节点配置

cat /etc/elasticsearch/elasticsearch.yml cluster.name: roobo-escluster node.name: master-01 node.master: true node.ingest: true node.data: false path.data: /data/es-data01,/data/es-data02 path.logs: /data/es-data01/eslogs bootstrap.memory_lock: true network.host: 172.20.3.17 http.port: 9200 discovery.zen.ping.unicast.hosts: [“172.20.3.17:9300”,”172.20.3.18:9300”,”172.20.3.19:9300”] discovery.zen.minimum_master_nodes: 2 gateway.recover_after_nodes: 6 gateway.expected_nodes: 8 gateway.recover_after_time: 5m http.cors.enabled: true http.cors.allow-origin: “*“

2）、data节点配置

cat /etc/elasticsearch/elasticsearch.yml cluster.name: roobo-escluster node.name: data-01 node.master: false node.ingest: false node.data: true path.data: /data/es-data01,/data/es-data02 path.logs: /data/es-data01/eslogs bootstrap.memory_lock: true network.host: 172.20.3.20 http.port: 9200 discovery.zen.ping.unicast.hosts: [“172.20.3.17:9300”,”172.20.3.18:9300”,”172.20.3.19:9300”] discovery.zen.minimum_master_nodes: 2 gateway.recover_after_nodes: 6 gateway.expected_nodes: 8 gateway.recover_after_time: 5m http.cors.enabled: true http.cors.allow-origin: “*“

3）、jvm调优

默认只需要调整HEAP大小，最好不超过内存的50%，大内存服务器不超过31G

cat /etc/elasticsearch/jvm.options |egrep ‘Xms|Xmx’ -Xms14g -Xmx14g

3、开机启动

systemctl enable elasticsearch

三、Elasticsearch常见操作

查看nodes

curl http://172.20.3.20:9200/_cat/nodes?v ip heap.percent ram.percent cpu load_1m load_5m load_15m node.role master name 172.20.3.20 4 57 0 0.04 0.03 0.05 d - data-01 172.20.3.18 4 60 0 0.05 0.03 0.05 mi - master-02 172.20.3.24 5 57 0 0.00 0.01 0.05 d - data-05 172.20.3.19 9 38 0 0.02 0.02 0.05 mi - master-03 172.20.3.21 4 57 0 0.00 0.02 0.05 d - data-02 172.20.3.23 5 57 0 0.00 0.01 0.05 d - data-04 172.20.3.22 3 57 0 0.00 0.01 0.05 d - data-03 172.20.3.17 4 68 0 0.00 0.01 0.05 mi * master-01 查看nodes状态 curl http://172.20.3.20:9200/_nodes/stats?pretty 查看集群健康状态 curl http://172.20.3.20:9200/_cluster/health?pretty curl http://172.20.3.20:9200/_cluster/health?level=indices curl http://172.20.3.20:9200/_cluster/health?level=shards 查找索引 curl http://172.20.3.20:9200/_cat/indices?bytes=b | sort -rnk8 |grep -V marvel 查看设置 curl http://172.20.3.20:9200/_cluster/settings?pretty